立式加工中心仿真系统控制技术研究

发布时间：2018-04-18 17:03

本文选题：加工仿真 + 控制系统　；参考：《西安科技大学》2015年硕士论文

【摘要】：论文在对国内外数控仿真系统调研的基础上,研究了面向制造业数控加工仿真系统控制技术,分别从数控程序编译并提取加工信息和机床轨迹运动控制两大模块入手,完成数控代码的检查纠错与机床模型的驱动控制两项功能。在总结手工编程和自动编程中常见的词法、语法、语义等错误的基础上,采用Greta正则表达式设计了匹配规则表,并设计算法完成词法检查;利用MFC强大的类库函数设计了语法、语义等错误检查算法,实现了逻辑和数据规则错误检查;采用遍历数控程序中各个字符的方法,从中提取加工重要信息,并定义结构体数据类型完成加工信息的存储,实现了数控代码的编译过程。在分析真实机床控制原理后,设计了机床运动仿真系统的控制技术总体方案:利用OpenGL图形变换函数为各机床运动部件在仿真环境下建立局部坐标系,利用VIEW3DS将机床模型导入到仿真环境中,并借助出栈入栈函数嵌套完成机床各模型之间的从属关系约定。采用图形变换原理,实时更新变换函数的参数,利用MFC定时器与OpenGL的双缓存技术实现了机床运动仿真。依据时间分割法原理设计算法完成加工信息中数据点的密化,为运动控制提供数据流,从而综合实现了与真实数控机床基本一致的代码驱动方式。根据论文的研究内容,以VC为平台,以OpenGL为图形设备接口,以三轴立式加工中心J1VMC500为实例,开发了该加工中心的数控仿真系统,实现了对数控加工程序的编译和机床运动轨迹的驱动。
[Abstract]:Based on the investigation of NC simulation system at home and abroad, the control technology of NC machining simulation system for manufacturing industry is studied in this paper, which starts with two modules of NC program compiling and extracting machining information and machine tool trajectory motion control.Complete NC code check error correction and machine tool model drive control two functions.On the basis of summarizing the common errors in manual programming and automatic programming, the matching rule table is designed by using Greta regular expression, and the algorithm is designed to complete lexical checking, and the syntax is designed by using the powerful class library function of MFC.The error checking algorithm such as semantics realizes the error checking of logic and data rules, uses the method of traversing each character in the NC program, extracts the important information from the processing, and defines the data type of the structure body to complete the storage of the processing information.The compiling process of NC code is realized.After analyzing the control principle of real machine tool, the overall scheme of control technology of machine tool motion simulation system is designed: the local coordinate system is established for each moving part of machine tool by using OpenGL graphic transformation function under the simulation environment.The machine tool model is imported into the simulation environment by VIEW3DS, and the dependency agreement among the machine tool models is accomplished by nesting the function of the stack in the stack.The principle of graphic transformation is used to update the parameters of the transformation function in real time, and the motion simulation of machine tool is realized by using MFC timer and double buffer technology of OpenGL.According to the principle of time division algorithm, the data points in machining information are densified and the data stream is provided for motion control. Thus, the code driving mode is basically consistent with the real NC machine tool.According to the research content of the thesis, taking VC as the platform, OpenGL as the graphic device interface and J1VMC500 as an example, the NC simulation system of the machining center is developed.The NC machining program is compiled and the movement track of the machine is driven.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG659

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